fc6e97cf2f
Copying an MCInst isn't cheap (copies all operands) and the whole instruction is only used for the Intel erratum mitigation, which is off by default. In all other cases, the opcode alone suffices. This slightly pessimizes code that uses moves to segment registers -- but that's uncommon and not performance-sensitive anyway. As a related change, also call canPadInst() only when the result is actually used, which is typically only the case in emitInstrEnd. This gives a minor performance improvement.
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Getting the Source Code and Building LLVM
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Getting in touch
Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.
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